Dual head vibrator



FIG. 1 is a front perspective view of our new design for a dual head vibrator;

FIG. 2 is a left elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures are for the purposes of illustrating portions of the dual head vibrator which form no part of the claimed design. 

CLAIM The ornamental design for a dual head vibrator, as shown and described. 